The overcup oak is native to the southeastern United States where it is found growing primarily in low-lying wet areas. So named because the cap almost completely covers the acorn, the trees are used extensively for reforestation in overly wet areas. They are also an important food source for animals such as wild turkeys, deer and squirrels that feast on the acorns.This tree thrives in cold hardiness zones 5 to 9. The overcup oak grows in most types of soil and tolerates partial shade to full sunlight. Average height at maturity is 70 feet with a spread of 45 feet.